Write-once data writing system for optical recording medium
US4815062A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 21, 1987 |
| Grant date | Mar 21, 1989 |
| Priority date | — |
| Expiry date | Aug 21, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/218
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Disclosed is a write-once data writing method for optical recording medium of a type wherein a data track includes a plurality of sectors each having at least a preamble and data. A deceleration region is provided at a position following the last recorded sector on a track including both recorded and blank areas, the length of the deceleration region corresponding to a deceleration time necessary to change the relative moving rate of a writing/reading head with respect to the optical recording medium from one for reading to another for writing, and then additional data is recorded sector by sector at region following said deceleration region. Also, disclosed is an apparatus for achieving the method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.